Best Reviewer of November-December 2019 - Kyungtae Ko Kyungtae Ko November 2019 Kyungtae Ko, MD, PhD is an assistant professor of Urol- ogy at Hallym University, Kandong sacred heart hospi- tal, Seoul, Korea. Dr. Ko earned a medical degree from Hallym university, Chuncheon, Korea in 2005, Then, he earned PhD degree from Seoul National University, Seoul, Korea with “Prognostic Significance of Ki-67 in Non-muscle Invasive Bladder Cancer Patients: Systemat- ic Review and Meta-analysis”. From April 2009 to April 2012, he worked army surgeon at department of urology, chairman, Daegu army hospital. His main concerns are lithiasis and minimal invasive surgery such like miniaturized PCNL, laparoscopic sur- gery. He is known to be good at ultra-miniperc (UMP) and metabolic workup in Korea. He has been serving as a member of Korean society of endourology and robotics, the Society of Endourology and YES (Young endoluminal society). He has published many papers in SCI(E) journals. He wrote several guidelines about lithiasis and he is the author of chapters for bladder cancer, Elsevier. Careful and fair-minded evaluation of scientific articles is an important scholarly contribution and a gratifying duty in academics. Peer review is a vital process for any journal and enables publication of innovative research that meets the highest standards of quality. "Dr. Ko was chosen as the best reviewer(s) of the issue by the editorial board of The Urology Journal for his valuable and timely review of manuscript"